<template>
  <div class="container">
    <section class="stage stage-1">
      <figure class="ball bubble">
        内容
      </figure>
      <div class="name">副标题副标题</div>
    </section>
    <section class="stage stage-2">
      <figure class="ball bubble">
        内容
      </figure>
      <div class="name">副标题副标题</div>
    </section>
    <section class="stage stage-3">
      <figure class="ball bubble">
        内容
      </figure>
      <div class="name">副标题副标题</div>
    </section>
  </div>
</template>

<script>
export default {
  name: 'ball'

}
</script>

<style lang="scss" scoped>
.container{
  display: flex;
  justify-content: center;
  height: 250px;
  width: 100%;
}
.ball {
  display: inline-block;
  width: 100%;
  height: 100%;
  border-radius: 100%;
  position: relative;
  opacity: .8;
  background: radial-gradient(circle at bottom, #81e8f6, #76deef 10%, #055194 80%, #062745 100%);
  transform: translate(-50%,-50%);
  font-size: 36px;
  font-weight: bold;
  color: #f23340;
  display: flex;
  align-items: center;
  justify-content: center;
}
  .ball:before {
    content: "";
    position: absolute;
    top: 1%;
    left: 5%;
    width: 90%;
    height: 90%;
    border-radius: 100%;
    background: radial-gradient(circle at top, white, rgba(255, 255, 255, 0) 58%);
    -webkit-filter: blur(5px);
    filter: blur(5px);
    z-index: 2;
  }
  .ball:after {
    content: "";
    position: absolute;
    display: none;
    top: 5%;
    left: 10%;
    width: 80%;
    height: 80%;
    border-radius: 100%;
    -webkit-filter: blur(1px);
    filter: blur(1px);
    z-index: 2;
    -webkit-transform: rotateZ(-30deg);
    transform: rotateZ(-30deg);
  }
  .ball .shadow {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.1) 40%, rgba(0, 0, 0, 0) 50%);
    -webkit-transform: rotateX(90deg) translateZ(-160px);
    transform: rotateX(90deg) translateZ(-160px);
    z-index: 1;
  }
  .ball.plain {
    background: black;
  }
  .ball.plain:before, .ball.plain:after {
    display: none;
  }
  .ball.bubble {
    background: radial-gradient(circle at 50% 55%, rgba(240, 245, 255, 0.9), rgba(240, 245, 255, 0.9) 40%, rgba(225, 238, 255, 0.8) 60%, rgba(43, 130, 255, 0.4));
    -webkit-animation: bubble-anim 2s ease-out infinite;
    animation: bubble-anim 2s ease-out infinite;
  }
  .ball.bubble:before {
    -webkit-filter: blur(0);
    filter: blur(0);
    height: 80%;
    width: 40%;
    background: radial-gradient(circle at 130% 130%, rgba(255, 255, 255, 0) 0, rgba(255, 255, 255, 0) 46%, rgba(255, 255, 255, 0.8) 50%, rgba(255, 255, 255, 0.8) 58%, rgba(255, 255, 255, 0) 60%, rgba(255, 255, 255, 0) 100%);
    -webkit-transform: translateX(131%) translateY(58%) rotateZ(168deg) rotateX(10deg);
    transform: translateX(131%) translateY(58%) rotateZ(168deg) rotateX(10deg);
  }
  .ball.bubble:after {
    display: block;
    background: radial-gradient(circle at 50% 80%, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0) 74%, white 80%, white 84%, rgba(255, 255, 255, 0) 100%);
  }
  .stage {
    width: 150px;
    height: 150px;
    display: inline-block;
    -webkit-perspective: 1200px;
    -moz-perspective: 1200px;
    -ms-perspective: 1200px;
    -o-perspective: 1200px;
    perspective: 1200px;
    -webkit-perspective-origin: 50% 50%;
    -moz-perspective-origin: 50% 50%;
    -ms-perspective-origin: 50% 50%;
    -o-perspective-origin: 50% 50%;
    perspective-origin: 50% 50%;
    .name{
      color: rgba($color: #fff, $alpha: .8);
      font-size: 16px;
      text-align: center;
      width: 100%;
      margin-left: 40px;
    }
  }
  .stage-2{
    margin: 0 60px;
  }
  .stage-3{
    margin-right: 80px;
  }
  body {
    width: 300px;
    margin: 20px auto;
    background: linear-gradient(to bottom, rgba(100, 100, 100, 0.2) 0%, rgba(255, 255, 255, 0.5) 40%, #ffffff 100%);
    background-repeat: no-repeat;
  }

  @-webkit-keyframes bubble-anim {
    0% {
      -webkit-transform: scale(1);
      transform: scale(1); }

    20% {
      -webkit-transform: scaleY(0.95) scaleX(1.05);
      transform: scaleY(0.95) scaleX(1.05); }

    48% {
      -webkit-transform: scaleY(1.1) scaleX(0.9);
      transform: scaleY(1.1) scaleX(0.9); }

    68% {
      -webkit-transform: scaleY(0.98) scaleX(1.02);
      transform: scaleY(0.98) scaleX(1.02); }

    80% {
      -webkit-transform: scaleY(1.02) scaleX(0.98);
      transform: scaleY(1.02) scaleX(0.98); }

    97%, 100% {
      -webkit-transform: scale(1);
      transform: scale(1); }
  }

  @keyframes bubble-anim {
    0% {
      -webkit-transform: scale(1);
      transform: scale(1); }

    20% {
      -webkit-transform: scaleY(0.95) scaleX(1.05);
      transform: scaleY(0.95) scaleX(1.05); }

    48% {
      -webkit-transform: scaleY(1.1) scaleX(0.9);
      transform: scaleY(1.1) scaleX(0.9); }

    68% {
      -webkit-transform: scaleY(0.98) scaleX(1.02);
      transform: scaleY(0.98) scaleX(1.02); }

    80% {
      -webkit-transform: scaleY(1.02) scaleX(0.98);
      transform: scaleY(1.02) scaleX(0.98); }

    97%, 100% {
      -webkit-transform: scale(1);
      transform: scale(1);
      }
  }
</style>
